U.S. patent application number 10/892041 was filed with the patent office on 2005-03-17 for radiator including a heat sink and a fan.
This patent application is currently assigned to HON HAI Precision Industry CO., LTD.. Invention is credited to Chan, Po-Han, Ku, Chin-Long.
Application Number | 20050056399 10/892041 |
Document ID | / |
Family ID | 34271522 |
Filed Date | 2005-03-17 |
United States Patent
Application |
20050056399 |
Kind Code |
A1 |
Ku, Chin-Long ; et
al. |
March 17, 2005 |
Radiator including a heat sink and a fan
Abstract
A radiator includes a heat sink (10), a fan holder (50) and a
fan (30). The heat sink includes a heat-absorbing member (12, 18)
that defines a cavity (20) in an end thereof. The fan holder
includes a central hub (52) secured into the cavity of the heat
sink. The fan is positioned to the heat sink via the fan
holder.
Inventors: |
Ku, Chin-Long; (Fullerton,
CA) ; Chan, Po-Han; (Fullerton, CA) |
Correspondence
Address: |
MORRIS MANNING & MARTIN LLP
1600 ATLANTA FINANCIAL CENTER
3343 PEACHTREE ROAD, NE
ATLANTA
GA
30326-1044
US
|
Assignee: |
HON HAI Precision Industry CO.,
LTD.
Tu-cheng City
TW
|
Family ID: |
34271522 |
Appl. No.: |
10/892041 |
Filed: |
July 15, 2004 |
Current U.S.
Class: |
165/80.3 ;
165/121; 257/E23.099 |
Current CPC
Class: |
H01L 2924/0002 20130101;
H01L 23/467 20130101; H01L 2924/0002 20130101; H01L 2924/00
20130101 |
Class at
Publication: |
165/080.3 ;
165/121 |
International
Class: |
H05K 007/20 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 17, 2003 |
TW |
92216666 |
Claims
What is claimed is:
1. A radiator comprising: a heat sink having a heat-absorbing
member; a fan holder having central portion thereof secured to the
heat-absorbing member so that the fan holder is mounted to the heat
sink; and a fan positioned to the heat sink via the fan holder.
2. The radiator of claim 1, wherein a plurality of fins are
radially arranged at a periphery of the heat-absorbing member.
3. The radiator of claim 1, wherein the fan holder comprises a hub
defining a central bore therein.
4. The radiator of claim 3, wherein a cavity is defined in the
heat-absorbing member, the cavity receiving the hub therein.
5. The radiator of claim 3, wherein an insert in physical
connection with the heat-absorbing member is extended through the
bore in order to secure the fan holder to the heat sink.
6. The radiator of claim 5, wherein the insert is a screw that is
inserted through the bore and screwly engaged in the heat-absorbing
member.
7. The radiator of claim 1, wherein a plurality of stator blades is
formed on the fan holder spread in a direction opposing to rotor
blades of the fan, for guiding airflow from the fan into the heat
sink.
8. The radiator of claim 1, wherein a plurality of locating members
is formed at the fan holder for locating the fan to the fan
holder.
9. The radiator of claim 8, wherein the locating members comprise a
plurality of catches embracing the fan therebetween, and a
plurality of pins inserted within the fan.
10. A radiator comprising: a heat sink comprising a heat-absorbing
member which defines a cavity in an end thereof; a fan holder
comprising a central hub secured to the heat sink in the cavity;
and a fan positioned to the heat sink via the fan holder.
11. The radiator of claim 10, wherein a hole is defined in the
heat-absorbing member and a bore is defined in the hub
corresponding to the hole for insertion of an insert.
12. The radiator of claim 11, wherein the insert is a screw, the
hole is a screw hole and the bore is a through hole.
13. The radiator of claim 10, wherein a plurality of stator blades
is formed at a periphery of the hub for guiding airflow from the
fan into the heat sink.
14. The radiator of claim 10, wherein a plurality of fins is
radially arranged at a periphery of the heat-absorbing member.
15. The radiator of claim 10, wherein the heat-absorbing member
comprises a column defining an axial channel therein, and a pillar
interferentially inserted into the channel.
16. The radiator of claim 15, wherein the channel is longer than
the pillar so that the cavity is defined.
17. A fan assembly comprising: a fan comprising a frame and a
plurality of radially arranged rotor blades in the frame for
driving air; and a fan holder holding the frame thereon and
facilitating a securing of the fan somewhere, the holder comprising
a plurality of radially arranged stator blades stretching
oppositely to the rotor blades for diminishing airflow speed along
any radial direction and preventing airflow from earlier
escape.
18. The fan assembly of claim 17, further comprising a heat sink
having the fan secured thereon via the fan holder.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to radiators for removing heat
from electronic components, and more particularly to a radiator
including a heat sink and a fan mounted on the heat sink for
enforcing air convection.
[0003] 2. Description of Related Art
[0004] During operating of an electronic component such as a
computer central processing unit (CPU), a large amount of heat is
often produced. The heat must be quickly removed from the CPU to
prevent it from becoming unstable or being damaged.
[0005] Typically, a heat sink is attached to an outer surface of
the CPU to facilitate removal of heat therefrom. A fan is mounted
on top of the heat sink to enhance heat dissipation efficiency.
[0006] U.S. Pat. No. 6,017,185 disclosed a radiator in which the
fan is mounted to the heat sink via four screws. Correspondingly,
four screw holes are defined in a base of the heat sink. The screw
holes should be evenly distributed on the base and each has a
coordinated position according to locations of the others in order
to stably fix the fan to the heat sink. As a result, manufacture
cost of the radiator is increased. Furthermore, once any one of the
screws for mounting the fan to the heat sink is damaged, the fan is
at the risk of falling due to unexpected shaking or vibration. This
adversely affects the heat dissipation efficiency of the radiator.
Additionally, it takes a long term to install four screws into the
screw holes, especially in mass production.
SUMMARY OF THE INVENTION
[0007] Accordingly, an object of the present invention is to
provide a radiator which has a stable configuration.
[0008] Another object of the present invention is to provide a
radiator which has a decrease in manufacture cost and an increase
in production of the radiator.
[0009] In order to achieve the objects set out above, a radiator in
accordance with a preferred embodiment of the present invention
comprises a heat sink, a fan holder and a fan. The heat sink
comprises a heat-absorbing member that defines a cavity at one side
thereof. The fan holder comprises a central hub secured into the
cavity of the heat sink. The fan is positioned to the heat sink via
the fan holder.
[0010] Other objects, advantages and novel features of the present
invention will become more apparent from the following detailed
description when taken in conjunction with the accompanying
drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is an exploded, isometric view of a radiator in
accordance with the preferred embodiment of the present invention;
and
[0012] FIG. 2 is an assembled view of FIG. 1.
DETAILED DESCRIPTION OF THE INVENTION
[0013] Referring to FIG. 1, a radiator in accordance with the
preferred embodiment of the present invention is provided to remove
heat from an electronic component (not shown), such as a central
processing unit (CPU). The radiator comprises a heat sink 10, a fan
30 and a fan holder 50 for attaching the fan 30 to the heat sink
10.
[0014] The heat sink 10 comprises a cylindrical column 12 and a
plurality of radial fins 16 radially extending from the
circumference of the column 12. An axial channel 14 is defined in
the column 12. The channel 14 interferentially receives a
heat-conductive pillar 18 therein and therefore remains a cavity 20
right above the pillar 18. A hole 22, especially preferably to be a
screw hole, is defined in a substantially central portion of an end
of the pillar 18 in communication with the cavity 20. An opposite
end of the pillar 18 is attachable to an electronic component (not
shown), such as a chip, a central processing unit (CPU) or the
like.
[0015] The fan 30 comprises a rectangular frame 32 and a plurality
of rotor blades 34 radially arranged in the frame 32 in a manner
that each rotor blade 34 stretches clockwise. Four locating holes
36 are defined at four corners of the rectangular frame 32,
respectively.
[0016] The holder 50 has a rectangular shape in the preferred
embodiment but is not limited to that shape. A hub 52 is formed in
a substantial middle of the holder 50 and extends partially toward
the heat sink 10 corresponding to the cavity 20. A bore 54 is
defined in a middle of the hub 52, corresponding to the hole 22. A
plurality of stator blades 56 is radially formed at an outer
periphery of the hub 52. Each of the stator blades 56 has a shape
similar to that of every rotor blade 34 and is configured in a
manner that each stator blade 56 stretches counterclockwise. Pairs
of spaced catches 58 are symmetrically formed at a main side of the
holder 50 for jointly embracing the fan 30 therebetween. A pair of
shoulders 62 is symmetrically formed at two opposite sides of the
holder 50 for supporting a corresponding pair of clips (not shown).
A pair of pins 60 is further formed at two diagonal corners of the
holder 50 corresponding to the locating holes 36 of the fan 30.
Pairs of spaced latches 64 are symmetrically formed at the other
two opposite sides of the holder 50 for engaging with the heat sink
10.
[0017] In assembly of the radiator, the holder 50 is placed to the
heat sink 10 having the hub 52 received into the cavity 20. A screw
40, or its equivalents such as a rivet or a pin or the like, is
inserted through the bore 54 of the holder 50 and further engaged
in the hole 22 of the heat sink 10 so that the holder 50 is secured
to the heat sink 10. The latches 64 abut against corresponding fins
16 for facilitating the positioning of the holder 50 to the heat
sink 10. The fan 30 is pressed onto the holder 50 so that the
catches 58 jointly embrace the fan 30 therebetween. The pins 60 are
received into the corresponding locating holes 36 for keeping the
fan 30 in place. In use, the stator blades 56 lead airflow from the
fan 30 into the heat sink 10 in order to diminish the airflow speed
along any radial direction and prevent the airflow from earlier
escape out of the radiator.
[0018] It is to be understood, however, that even though numerous
characteristics and advantages of the present invention have been
set forth in the foregoing description, together with details of
the structure and function of the invention, the disclosure is
illustrative only, and changes may be made, for example, the pins
60 inserting into the locating holes 36 of the fan 30 can further
form a hook at their distal ends to clasp in the holes 36 for
positioning the fan 30 to the holder 50, or, a pin can be formed
from the heat-conductive pillar 18 and engaged in the bore 54 of
the holder 50 so that the holder 50 is mounted to the heat sink
10.
* * * * *